/* ========================================
   清代天文档案平台 - 通用样式
   ======================================== */

/* ==================== CSS 变量系统 ==================== */
:root {
  /* 清代主题色 */
  --imperial-red: #A02422;      /* 帝王红 */
  --imperial-gold: #D4AF37;     /* 帝王金 */
  --imperial-yellow: #FFDC73;   /* 帝王黄 */
  --jade-green: #2C5F4D;        /* 玉绿 */
  --ink-black: #2C1810;         /* 墨黑 */
  --bronze-brown: #8B4513;      /* 青铜褐 */

  /* 背景色 */
  --bg-primary: #F8F4E9;        /* 宣纸白 */
  --bg-secondary: #F5E6CA;      /* 卷轴色 */
  --bg-card: #FAF8F3;           /* 卡片背景 */
  --bg-overlay: rgba(245, 230, 202, 0.95);

  /* 文字色 */
  --text-primary: var(--ink-black);
  --text-secondary: #5D4E37;
  --text-muted: #8B7355;
  --text-light: #F5E6CA;

  /* 边框色 */
  --border-color: var(--imperial-gold);
  --border-light: #E8D5B5;

  /* 阴影 */
  --shadow-sm: 0 2px 4px rgba(44, 24, 16, 0.08);
  --shadow-md: 0 4px 12px rgba(44, 24, 16, 0.12);
  --shadow-lg: 0 8px 24px rgba(44, 24, 16, 0.16);
  --shadow-imperial: 0 4px 20px rgba(160, 36, 34, 0.15);

  /* 间距 */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'STSong', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* ==================== 暗色模式 ==================== */
[data-theme="dark"] {
  /* 清代主题色（暗色调整） */
  --imperial-red: #C94644;      /* 帝王红（提亮） */
  --imperial-gold: #E5C158;     /* 帝王金（提亮） */
  --imperial-yellow: #FFE7A0;   /* 帝王黄（提亮） */
  --jade-green: #4A8068;        /* 玉绿（提亮） */
  --ink-black: #E8DCC8;         /* 墨黑（反转） */
  --bronze-brown: #A67B5B;      /* 青铜褐（提亮） */

  /* 背景色（暗色） */
  --bg-primary: #1A1614;        /* 深墨黑 */
  --bg-secondary: #25201C;      /* 次级背景 */
  --bg-card: #2D2722;           /* 卡片背景 */
  --bg-overlay: rgba(37, 32, 28, 0.95);

  /* 文字色（反转） */
  --text-primary: #F5E6D3;      /* 宣纸白 */
  --text-secondary: #D4C5B0;    /* 次级文字 */
  --text-muted: #9A8B7A;        /* 暗淡文字 */
  --text-light: #5D4E37;

  /* 边框色（调整） */
  --border-color: #8B7355;
  --border-light: #3D3630;

  /* 阴影（暗色） */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-imperial: 0 4px 20px rgba(201, 70, 68, 0.25);
}

/* ==================== 全局样式 ==================== */

* {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.8;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

[data-theme="dark"] {
  --bg-primary: #171311;
  --bg-secondary: #221c18;
  --bg-card: #2b241f;
  --bg-overlay: rgba(34, 28, 24, 0.95);
  --text-primary: #f7ecdd;
  --text-secondary: #e0cfb8;
  --text-muted: #bda98f;
  --text-light: #f6e3bc;
  --border-color: #b4945a;
  --border-light: #5b4b3a;
}

[data-theme="dark"] body {
  background-image:
    radial-gradient(circle at top, rgba(229, 193, 88, 0.06), transparent 32%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 180px);
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: 2.5rem;
  letter-spacing: 0.05em;
}

h2 {
  font-size: 2rem;
  letter-spacing: 0.03em;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

/* 段落和文本 */
p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--imperial-red);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--imperial-gold);
}

/* ==================== 导航栏样式 ==================== */
.navbar {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08) 0%, transparent 22%),
    linear-gradient(135deg, var(--imperial-red) 0%, #8B1D1B 58%, #741715 100%);
  border-bottom: 3px solid var(--imperial-gold);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-sm) 0;
  position: relative;
  overflow: hidden;
}

/* 导航栏装饰纹样 - 云纹 */
.navbar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    repeating-linear-gradient(
      90deg,
      rgba(255, 220, 115, 0.06) 0px,
      rgba(255, 220, 115, 0.06) 2px,
      transparent 2px,
      transparent 14px
    ),
    linear-gradient(90deg, transparent 0%, rgba(255, 220, 115, 0.12) 50%, transparent 100%),
    radial-gradient(ellipse at 10% 20%, rgba(212, 175, 55, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 30% 60%, rgba(212, 175, 55, 0.1) 0%, transparent 40%),
    radial-gradient(ellipse at 50% 30%, rgba(212, 175, 55, 0.12) 0%, transparent 45%),
    radial-gradient(ellipse at 70% 70%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 90% 40%, rgba(212, 175, 55, 0.15) 0%, transparent 40%);
  pointer-events: none;
  z-index: 0;
}

.navbar > .container-fluid::before {
  content: '';
  position: absolute;
  top: 10px;
  left: 18px;
  right: 18px;
  bottom: 14px;
  border-top: 1px solid rgba(255, 231, 160, 0.28);
  border-bottom: 1px solid rgba(255, 231, 160, 0.18);
  background-image:
    radial-gradient(circle at 12px 50%, rgba(255, 231, 160, 0.28) 0, rgba(255, 231, 160, 0.28) 2px, transparent 2px),
    radial-gradient(circle at calc(100% - 12px) 50%, rgba(255, 231, 160, 0.28) 0, rgba(255, 231, 160, 0.28) 2px, transparent 2px),
    repeating-linear-gradient(
      90deg,
      transparent 0 24px,
      rgba(255, 231, 160, 0.08) 24px 26px,
      transparent 26px 52px
    );
  opacity: 0.65;
  pointer-events: none;
  z-index: 0;
}

/* 导航栏底部装饰纹样 - 回纹 */
.navbar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--imperial-gold) 0px,
    var(--imperial-gold) 8px,
    transparent 8px,
    transparent 10px,
    var(--imperial-gold) 10px,
    var(--imperial-gold) 18px,
    transparent 18px,
    transparent 20px,
    var(--imperial-red) 20px,
    var(--imperial-red) 22px
  );
  z-index: 1;
}

/* 导航栏内容层级 */
.navbar > .container-fluid {
  position: relative;
  z-index: 2;
}

.navbar > .container-fluid > * {
  position: relative;
  z-index: 1;
}

.nav-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* 导航栏品牌文字装饰 */
.navbar-brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--imperial-yellow) !important;
  letter-spacing: 0.08em;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  position: relative;
}

/* 品牌文字周围的金色边框装饰 */
.navbar-brand::before {
  content: '';
  position: absolute;
  top: 50%;
  left: -15px;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: var(--imperial-gold);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.8);
}

.navbar-brand::after {
  content: '';
  position: absolute;
  top: 50%;
  right: -15px;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: var(--imperial-gold);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.8);
}

.navbar-brand:hover {
  color: white !important;
}

.nav-link {
  font-size: 1rem;
  color: var(--text-light) !important;
  padding: var(--spacing-xs) var(--spacing-sm) !important;
  margin: 0 var(--spacing-xs);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  border: 1px solid transparent;
  font-weight: 500;
}

/* 导航链接装饰 - 左侧金色竖线 */
.nav-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 0;
  background: linear-gradient(to bottom, var(--imperial-gold), var(--imperial-yellow));
  transition: height var(--transition-base);
  border-radius: 2px;
}

.nav-link:hover {
  color: white !important;
  background-color: rgba(255, 220, 115, 0.15);
  border-color: rgba(212, 175, 55, 0.3);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.nav-link:hover::before {
  height: 70%;
}

.nav-link.active {
  color: white !important;
  font-weight: 600;
  background-color: rgba(255, 220, 115, 0.25);
  border-color: var(--imperial-gold);
  box-shadow: 0 2px 12px rgba(212, 175, 55, 0.3);
}

.nav-link.active::before {
  height: 80%;
}

/* 汉堡菜单按钮 */
.navbar-toggler {
  border-color: var(--imperial-gold);
  padding: var(--spacing-xs);
  margin-left: 0;
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(245, 230, 202, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* 主题切换按钮 */
.theme-toggle {
  background: transparent;
  border: 2px solid var(--imperial-gold);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  margin-left: var(--spacing-sm);
  color: var(--imperial-yellow);
}

.theme-toggle:hover {
  background-color: rgba(255, 220, 115, 0.2);
  transform: rotate(180deg);
}

.theme-toggle svg {
  width: 20px;
  height: 20px;
  transition: all var(--transition-base);
}

/* 主题图标动画 */
.theme-toggle .sun-icon {
  display: block;
}

.theme-toggle .moon-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
  display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
  display: block;
}

/* ==================== 清代风格主题切换按钮 ==================== */
.theme-btn-imperial {
  background: linear-gradient(135deg, rgba(255, 220, 115, 0.18) 0%, rgba(212, 175, 55, 0.3) 100%);
  border: 1px solid rgba(255, 231, 160, 0.85);
  border-radius: 10px;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-base);
  color: var(--imperial-yellow);
  position: relative;
  overflow: hidden;
  box-shadow:
    inset 0 1px 0 rgba(255, 248, 225, 0.35),
    0 4px 10px rgba(0, 0, 0, 0.18);
  margin-left: var(--spacing-sm);
}

.theme-btn-imperial::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left var(--transition-slow);
}

.theme-btn-imperial::after {
  content: '';
  position: absolute;
  inset: 4px;
  border: 1px solid rgba(255, 231, 160, 0.16);
  border-radius: 7px;
  pointer-events: none;
}

.theme-btn-imperial:hover {
  background: linear-gradient(135deg, rgba(255, 220, 115, 0.3) 0%, rgba(212, 175, 55, 0.4) 100%);
  border-color: white;
  color: white;
  transform: translateY(-2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.4),
    0 6px 14px rgba(212, 175, 55, 0.35);
}

.theme-btn-imperial:hover::before {
  left: 100%;
}

.theme-btn-imperial:active {
  transform: translateY(0);
}

.theme-btn-imperial i {
  font-size: 1.2rem;
  position: relative;
  z-index: 1;
  transition: all var(--transition-base);
}

/* 暗色模式下的按钮样式 */
[data-theme="dark"] .theme-btn-imperial {
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 244, 195, 0.16), transparent 42%),
    linear-gradient(135deg, rgba(255, 220, 115, 0.12) 0%, rgba(212, 175, 55, 0.2) 100%);
  border-color: rgba(255, 231, 160, 0.9);
  color: var(--imperial-yellow);
  box-shadow:
    inset 0 1px 0 rgba(255, 248, 225, 0.18),
    0 4px 14px rgba(0, 0, 0, 0.35);
}

[data-theme="dark"] .theme-btn-imperial:hover {
  background:
    radial-gradient(circle at 30% 25%, rgba(255, 251, 220, 0.22), transparent 42%),
    linear-gradient(135deg, rgba(255, 220, 115, 0.24) 0%, rgba(212, 175, 55, 0.36) 100%);
  border-color: #fff3bf;
  color: #fff6dd;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.28),
    0 8px 18px rgba(229, 193, 88, 0.28);
}

/* ==================== 按钮样式 ==================== */
.btn-primary {
  background: linear-gradient(135deg, var(--imperial-red) 0%, #8B1D1B 100%);
  border-color: var(--imperial-gold);
  color: white;
  font-weight: 500;
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #8B1D1B 0%, var(--imperial-red) 100%);
  border-color: var(--imperial-gold);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-imperial);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-success {
  background: linear-gradient(135deg, var(--jade-green) 0%, #1E3D32 100%);
  border-color: var(--imperial-gold);
  color: white;
  transition: all var(--transition-base);
}

.btn-success:hover {
  background: linear-gradient(135deg, #1E3D32 0%, var(--jade-green) 100%);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-info {
  background: linear-gradient(135deg, #4A90A4 0%, #2C5F6E 100%);
  border-color: var(--imperial-gold);
  color: white;
  transition: all var(--transition-base);
}

.btn-info:hover {
  background: linear-gradient(135deg, #2C5F6E 0%, #4A90A4 100%);
  transform: translateY(-2px);
}

.btn-outline-primary {
  border-color: var(--imperial-red);
  color: var(--imperial-red);
  transition: all var(--transition-base);
}

.btn-outline-primary:hover {
  background-color: var(--imperial-red);
  border-color: var(--imperial-red);
  color: white;
}

.btn-outline-secondary {
  border-color: var(--border-color);
  color: var(--text-secondary);
}

.btn-outline-secondary:hover,
.btn-outline-secondary.active {
  background-color: rgba(212, 175, 55, 0.12);
  border-color: var(--imperial-gold);
  color: var(--text-primary);
}

.btn-outline-success {
  border-color: var(--jade-green);
  color: var(--jade-green);
  transition: all var(--transition-base);
}

.btn-outline-success:hover {
  background-color: var(--jade-green);
  border-color: var(--jade-green);
  color: white;
}

/* ==================== 卡片样式 ==================== */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  overflow: hidden;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-title {
  font-family: var(--font-serif);
  color: var(--imperial-red);
  border-bottom: 2px solid var(--imperial-gold);
  padding-bottom: var(--spacing-xs);
  margin-bottom: var(--spacing-sm);
}

.card-body {
  padding: var(--spacing-md);
}

/* ==================== 表单样式 ==================== */
.form-control {
  border-color: var(--border-light);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  transition: all var(--transition-fast);
}

.form-control:focus {
  border-color: var(--imperial-gold);
  box-shadow: 0 0 0 0.2rem rgba(212, 175, 55, 0.15);
}

.form-select {
  border-color: var(--border-light);
  border-radius: var(--radius-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  transition: all var(--transition-fast);
}

.form-select:focus {
  border-color: var(--imperial-gold);
  box-shadow: 0 0 0 0.2rem rgba(212, 175, 55, 0.15);
}

.form-label {
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
}

.input-group .btn {
  border-radius: var(--radius-sm);
}

[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: var(--bg-secondary);
  border-color: #7a6549;
  color: var(--text-primary);
}

[data-theme="dark"] .form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.9;
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
  background-color: #312922;
  border-color: var(--imperial-gold);
  color: var(--text-primary);
  box-shadow: 0 0 0 0.2rem rgba(229, 193, 88, 0.2);
}

[data-theme="dark"] .form-select option {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-outline-secondary {
  background: rgba(229, 193, 88, 0.08);
  border-color: rgba(229, 193, 88, 0.55);
  color: var(--imperial-yellow);
  box-shadow: inset 0 1px 0 rgba(255, 248, 225, 0.08);
}

[data-theme="dark"] .btn-outline-secondary:hover,
[data-theme="dark"] .btn-outline-secondary.active {
  background: linear-gradient(135deg, rgba(255, 220, 115, 0.86) 0%, rgba(212, 175, 55, 0.94) 100%);
  border-color: #fff0bc;
  color: #1a1614;
}

[data-theme="dark"] .btn-outline-primary {
  border-color: rgba(229, 193, 88, 0.6);
  color: #ffe7a0;
}

[data-theme="dark"] .btn-outline-primary:hover {
  background: linear-gradient(135deg, rgba(201, 70, 68, 0.92) 0%, rgba(160, 36, 34, 0.95) 100%);
  border-color: #ffd785;
  color: #fff7e2;
}

[data-theme="dark"] .btn-outline-success {
  border-color: rgba(136, 187, 162, 0.65);
  color: #bfe0d0;
}

[data-theme="dark"] .btn-outline-success:hover {
  background: linear-gradient(135deg, rgba(74, 128, 104, 0.95) 0%, rgba(44, 95, 77, 0.95) 100%);
  border-color: #cde9dd;
  color: #fff7e2;
}

/* ==================== 徽章样式 ==================== */
.badge {
  font-size: 0.85rem;
  padding: 0.4em 0.8em;
  font-weight: 500;
  border-radius: var(--radius-sm);
}

/* 主题标签莫兰蒂配色 */
.badge[data-theme="历法"] { background-color: #7BA23F !important; color: white; }
.badge[data-theme="日食"] { background-color: #B56E46 !important; color: white; }
.badge[data-theme="月食"] { background-color: #4E7CA1 !important; color: white; }
.badge[data-theme="节气"] { background-color: #8B8B56 !important; color: white; }
.badge[data-theme="气象"] { background-color: #A1746B !important; color: white; }
.badge[data-theme="地震"] { background-color: #9C8A7D !important; color: white; }
.badge[data-theme="特殊天象"] { background-color: #6B8E7B !important; color: white; }

/* ==================== 模态框样式 ==================== */
.modal-content {
  background-color: var(--bg-card);
  border: 2px solid var(--imperial-gold);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-imperial);
}

.modal-header {
  background: linear-gradient(135deg, var(--imperial-red) 0%, #8B1D1B 100%);
  color: white;
  border-bottom: 2px solid var(--imperial-gold);
  padding: var(--spacing-sm) var(--spacing-md);
}

/* 模态框导航按钮样式 */
.modal-header .btn-outline-secondary {
  background-color: white;
  border: 2px solid var(--imperial-gold);
  color: var(--imperial-red);
  font-weight: 700;
  padding: 0.5rem 1rem;
  font-size: 0.95rem;
  transition: all var(--transition-base);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.2);
  min-width: 90px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
}

.modal-header .btn-outline-secondary:hover {
  background-color: var(--imperial-yellow);
  border-color: var(--bronze-brown);
  color: var(--imperial-red);
  transform: scale(1.08);
  box-shadow: 0 5px 12px rgba(0, 0, 0, 0.3);
}

.modal-header .btn-outline-secondary:active {
  transform: scale(1.02);
}

.modal-header .btn-outline-secondary i {
  font-size: 1.2rem;
  font-weight: bold;
}

/* 暗色模式下的导航按钮样式 */
.modal-title {
  font-family: var(--font-serif);
  font-weight: 600;
}

.modal-body {
  padding: var(--spacing-md);
}

.modal-footer {
  border-top: 1px solid var(--border-light);
  padding: var(--spacing-sm) var(--spacing-md);
}

/* ==================== 容器样式 ==================== */
.container {
  max-width: 1200px;
  padding: 0 var(--spacing-md);
}

.container-fluid {
  padding: var(--spacing-md);
}

/* ==================== 页面装饰 ==================== */
.page-decoration {
  position: relative;
  overflow: hidden;
}

.page-decoration::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--imperial-gold) 0px,
    var(--imperial-gold) 30px,
    var(--imperial-red) 30px,
    var(--imperial-red) 32px
  );
}

[data-theme="dark"] .text-muted {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .table,
[data-theme="dark"] .table td,
[data-theme="dark"] .table th,
[data-theme="dark"] .table-responsive {
  color: var(--text-primary);
  border-color: var(--border-light);
}

[data-theme="dark"] .table > :not(caption) > * > * {
  background-color: transparent;
  color: inherit;
  border-color: var(--border-light);
}

[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) > * {
  --bs-table-accent-bg: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

[data-theme="dark"] .table-hover > tbody > tr:hover > * {
  --bs-table-accent-bg: rgba(229, 193, 88, 0.08);
  color: var(--text-primary);
}

[data-theme="dark"] .page-link {
  background-color: var(--bg-secondary);
  border-color: #7a6549;
  color: var(--imperial-yellow);
}

[data-theme="dark"] .page-link:hover,
[data-theme="dark"] .page-item.active .page-link {
  background-color: rgba(229, 193, 88, 0.18);
  border-color: var(--imperial-gold);
  color: var(--text-primary);
}

[data-theme="dark"] .btn-close {
  filter: invert(1) brightness(1.15);
  opacity: 0.88;
}

/* 云纹装饰（使用 CSS 绘制简单版本） */
.cloud-pattern {
  position: absolute;
  width: 60px;
  height: 30px;
  opacity: 0.1;
}

.cloud-pattern::before,
.cloud-pattern::after {
  content: '';
  position: absolute;
  background: var(--imperial-gold);
  border-radius: 50%;
}

.cloud-pattern::before {
  width: 30px;
  height: 30px;
  top: 0;
  left: 0;
}

.cloud-pattern::after {
  width: 40px;
  height: 40px;
  top: -10px;
  left: 15px;
}

/* ==================== 加载动画 ==================== */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.loading-overlay.active {
  opacity: 1;
  visibility: visible;
}

.loading-spinner {
  width: 60px;
  height: 60px;
  border: 4px solid var(--border-light);
  border-top-color: var(--imperial-red);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  margin-top: var(--spacing-md);
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-secondary);
  text-align: center;
}

/* ==================== 分页样式 ==================== */
.pagination .page-link {
  color: var(--imperial-red);
  border-color: var(--border-light);
  background-color: var(--bg-card);
  transition: all var(--transition-fast);
}

.pagination .page-link:hover {
  background-color: var(--imperial-yellow);
  border-color: var(--imperial-gold);
  color: var(--imperial-red);
}

.pagination .page-item.active .page-link {
  background-color: var(--imperial-red);
  border-color: var(--imperial-gold);
  color: white;
}

.page-jump {
  display: inline-flex;
  align-items: center;
  margin: 0 var(--spacing-sm);
}

.page-jump input {
  width: 60px;
  margin: 0 var(--spacing-xs);
  text-align: center;
}

/* ==================== Tab 标签页样式 ==================== */
.nav-tabs {
  border-bottom: 2px solid var(--imperial-gold);
  margin-bottom: var(--spacing-md);
}

.nav-tabs .nav-link {
  color: var(--imperial-red);
  border: none;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  padding: var(--spacing-xs) var(--spacing-md);
  transition: all var(--transition-fast);
}

.nav-tabs .nav-link:hover {
  color: var(--imperial-red);
  background-color: var(--bg-secondary);
  border-color: transparent;
}

.nav-tabs .nav-link.active {
  color: var(--imperial-red);
  background-color: var(--imperial-yellow);
  border: 1px solid var(--imperial-gold);
  border-bottom-color: transparent;
  font-weight: 600;
}

/* ==================== 工具类 ==================== */
.text-imperial-red {
  color: var(--imperial-red) !important;
}

.text-imperial-gold {
  color: var(--imperial-gold) !important;
}

.bg-imperial-red {
  background-color: var(--imperial-red) !important;
}

.bg-scroll {
  background-color: var(--bg-secondary) !important;
}

.border-imperial {
  border-color: var(--imperial-gold) !important;
}

/* ==================== 响应式断点 ==================== */

/* 超小屏幕（< 576px）- 移动端优先 */
@media (max-width: 575.98px) {
  html {
    font-size: 14px;
  }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .container {
    padding: 0 var(--spacing-sm);
  }

  .container-fluid {
    padding: var(--spacing-sm);
  }

  .navbar > .container-fluid {
    gap: var(--spacing-xs);
    align-items: center;
  }

  .navbar-brand {
    font-size: 1.15rem;
    max-width: calc(100% - 110px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  /* 移动端导航栏 */
  .navbar-collapse {
    background-color: rgba(139, 29, 27, 0.98);
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    padding: var(--spacing-md);
    overflow-y: auto;
    border-top: 1px solid rgba(255, 231, 160, 0.18);
  }

  .navbar-nav {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .nav-link {
    display: flex;
    align-items: center;
    min-height: 48px;
    padding: var(--spacing-sm) var(--spacing-md) !important;
    margin: var(--spacing-xs) 0;
    font-size: 1.1rem;
  }

  .nav-link i {
    margin-right: 0.5rem;
  }

  .nav-toolbar {
    margin-left: auto;
  }

  .theme-btn-imperial,
  .navbar-toggler {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
  }

  .pagination {
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .page-jump {
    width: 100%;
    justify-content: center;
    margin-top: var(--spacing-xs);
  }

  .card {
    margin-bottom: var(--spacing-sm);
  }
}

/* 小屏幕（≥ 576px）*/
@media (min-width: 576px) {
  .container {
    max-width: 540px;
  }
}

/* 中等屏幕（≥ 768px）- 平板 */
@media (min-width: 768px) {
  .container {
    max-width: 720px;
  }

  /* 恢复导航栏正常显示 */
  .navbar-collapse {
    background-color: transparent;
    position: static;
    padding: 0;
  }

  .navbar-nav {
    flex-direction: row;
  }
}

@media (max-width: 767.98px) {
  .container-fluid {
    padding: var(--spacing-sm);
  }

  .navbar > .container-fluid {
    gap: var(--spacing-xs);
    align-items: center;
  }

  .navbar-brand {
    max-width: calc(100% - 110px);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .navbar-collapse {
    background-color: rgba(139, 29, 27, 0.98);
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    bottom: 0;
    padding: var(--spacing-md);
    overflow-y: auto;
    border-top: 1px solid rgba(255, 231, 160, 0.18);
  }

  .navbar-nav {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .nav-link {
    display: flex;
    align-items: center;
    min-height: 48px;
  }

  .nav-link i {
    margin-right: 0.5rem;
  }

  .nav-toolbar {
    margin-left: auto;
  }

  .theme-btn-imperial,
  .navbar-toggler {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
  }

  .modal-header {
    padding: var(--spacing-sm);
  }

  .modal-header .d-flex.align-items-center,
  .modal-header .ms-auto {
    width: 100%;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  .modal-header .ms-auto {
    margin-top: var(--spacing-sm) !important;
  }

  .modal-header .btn,
  .modal-header .btn-outline-secondary {
    min-height: 42px;
  }
}

/* 大屏幕（≥ 992px）- 桌面 */
@media (min-width: 992px) {
  .container {
    max-width: 960px;
  }

  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
}

/* 超大屏幕（≥ 1200px）*/
@media (min-width: 1200px) {
  .container {
    max-width: 1140px;
  }
}

/* 超超大屏幕（≥ 1400px）*/
@media (min-width: 1400px) {
  .container {
    max-width: 1320px;
  }
}

/* ==================== 打印样式 ==================== */
@media print {
  .navbar,
  .filters,
  .pagination,
  .btn {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ddd;
  }
}